I looked through my files and I think there's a few Fort Minor things missing on this list:
Get It & Spray Paint And Ink Pens - Promo CDS [2006]
Get It [instrumental] (3:57)
Spray Paint And Ink Pens [instrumental] (3:59) ...although this one is mentioned on the list
Welcome ...I think this was released free for download
Welcome [Acapella clean/explicit] (3:08/3:08)
Welcome [instrumental] (3:33)
Mike Shinoda's MTV Video Music Award 2005 Scores
100 Degrees [instrumental, cut] (00:49)
I think only this clip corresponds to a full Fort Minor song on the We Major Mixtape. The other clips exist only as instrumentals and hence shouldn't be on the list, right?
Unsure about source
Petrified [Acapella] (3:13) ...not sure about the source...single maybe?
Remember The Name [Acapella] (3:39) ...could be from the stems?